9781422271483

WORDS TO UNDERSTAND

climate change: changes to the environment caused by both natural and human-created processes combustion: a chemical process in which fuel reacts rapidly with oxygen and gives off heat contractor: a person or company that is hired for a certain period of time to provide services, goods, equipment, materials, or staff in order to meet an established goal electric grid: an interconnected group of electricity generators, high-power transmission wires, and lower-power distribution wires that connect electricity producers to end users industry: a particular area of business, such as car manufacturing or hospitality renewable energy: an energy source that can be replaced once it is used; the five main types of renewable energy are solar, wind, geothermal, hydropower, and bioenergy

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